Pin pointed weight work holder



Nov. 26, 1957 H. L. DIAMOND 2,814,275

m Pom'ma' wmcm: woax HOLDER Filed Aug. 2a., 1956 INVENIZOR. Harry L. Diamond I, iff/um v ATTORNEY United States Patent PIN POINTED WEIGHT WORK HOLDER Harry L. Diamond, N ewburgh, N. Y.

Application August 22, 1956, Serial No. 605,509 2 Claims. (Cl. 120-82) This invention relates to a pin pointed weight work holder adapted to hold paper patterns, cloth, or other similar sheet materials upon a horizontal surface and against angular movement with respect to each other and the horizontal surface.

It is an object of the present invention to provide in a pin pointed work holder a construction making possible the use of ordinary thumb tacks as the points for penetrating the sheet material and in a manner in which they can be replaced by other thumb tacks upon becoming dull or broken.

It i another object of the invention to provide a pin pointed work holder including a container body with the weight element lying within the container body and being movable therein to withdraw the pin points on the bottom surface of the container body upon the work holder being inverted and wherein the thumb tacks are carried in a plate that is releasably secured to the undersurface of the weight element by a single screw so that the plate carrying the tacks can be pivoted upon the weight to a angled position out of alignment from the bottom of the weight so that the thumb tacks can be removed and without disengagement of their carrying plate from the weight.

Other objects of the present invention are to provide a pin pointed weight work holder for sheet material lying on a horizontal surface, having the above objects in mind, which is of simple construction, inexpensive to manufacture, has a minimum number of parts, compact, durable, of pleasing appearance, efficient and effective in use.

Other objects, and for a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:

Figure 1 is a perspective view of the pin pointed weight work holder embodying the features of the present invention,

Fig. 2 is an exploded and perspective view of the parts of the work holder,

Fig. 3 is a fragmentary vertical sectional view of the work holder taken on line 33 of Fig. l, and

Fig. 4 is a transverse sectional view taken on line 4-4 of Fig. 1.

In my co-pending application, Serial No. 563,276, filed February 3, 1956, I have shown and claimed a work holder in which the weight is movable in the container part and the pin points are in the form of sharp pointed steel needles rigidly fixed directly to the corners of the weight element. These needle points are not readily removable and without care may become bent or broken. According to the present construction an arrangement including thumb tacks has been provided so that the pointed members or thumb tacks can be easily replaced upon becoming broken or worn.

Referring now to the figures, represents a container body of rectangular shape and having a bottom 11 with long side walls 12 and 13 and end walls 14 and 15. In the bottom 11 and in each of the four corners of the ice same is a small hole 16. A thumb tack carrying plate 17 has corresponding holes 18 adapted to contain thumb tacks 19. The points of the thumb tacks upon being depressed will project from the holes 16 and will penetrate any sheet material upon which the paper weight is placed.

The thumb tack carrying plate 17 has a central threaded hole opening 20. A weight 21 formed of heavy metal has a counterbored hole 22 through which a screw 23 is extended to enter the threaded opening 20 of the thumb tack carrying plate 17 and which when tightened will bring the heads of the thumb tacks 19 against its bottom surface so that the thumb tacks will be held by the plate 17 thereagainst and with the pointed ends extended through the plate and through the bottom of the container body 11 when the work holder is righted to its work holding position. The full height of the assembly of the thumb tack carrying plate, the thumb tack heads and the weight 21 is less than the internal height of the side and end wall of the container 10. This permits the movement of the weight assembly within the container 10 so that the pointed ends of the thumb tacks are retracted through the bottom 11 upon the weight holder being inverted. The weight 21 has spaced threaded openings 24 and 25. A guide plate of diamond shape 26 has corresponding countersunk holes 27 and 28 through which fastening screws 29 and 30 are extended to secure the guide plate 26 to the top of the weight 21.

The weight assembly is held within the container 10 by opposing cover pieces 31, 32 having guide recesses 33 and 34 that provide an opening of diamond shape into which the plate 26 may slide. The cover pieces 31 and 32 respectively have countersunk holes 35 and 36 through which fastening screws 37 and 38 are respectively extended into threaded openings 39 in the corners of container 10 and to secure the cover pieces 31 and 32 upon the container 10.

With the parts all assembled and the weight holder put in use, the thumb tacks 19 will penetrate the sheet material lying on the horizontal surface and prevent angular movement of overlying pieces of this sheet material relative to each other and to the horizontal supporting surface. Upon the work holder being inverted the weight assembly within the container 10 will move downwardly so as to retract the points of the thumb tacks and render the work holder free of its points so that no injury can be had by one coming into contact with the holder at this time.

If it is desired to replace the thumb tacks in the assembly because of them becoming broken or dull, the cover pieces 31 and 32 can be readily removed upon releasing the screws 37 and 38 and the weight assembly taken from the container body 10. By applying some pressure the carrier plate 17 can be angled on the screw 23 to clear the heads of the thumb tacks 18 from the bottom surface of the weight 21 so that they can be readily removed from their holes 18 in the carrier plate and replaced with other sharp thumb tacks. Thereafter, the carrier plate with the new thumb tacks is angled back into place and the weight assembly dropped into the container body 10 and made secure therein by the cover pieces 31 and 32.

It should now be apparent that there has been provided a pin pointed weighted work holder which can have its pin points readily easily replaced upon them becoming broken, bent or dull.

While various changes may be made in the detailed construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims.

What is claimed is:

1. A pin pointed weight Work holder comprising a container having bottom, side and end walls, said bottom wall having holes through which pin points may be projected to penetrate sheet material lying on a horizontal surface, a weight assembly of less height than the internal height of the side and end walls of the container to permit the weight assembly to be moved within the container, said weight assembly including a weight, pointed end members adapted to extend through the respective holes in the bottom of the container and means for releasably securing the pointed members upon the bottom of the weighted member whereby they can be easily replaced by other pointed members and removable cover means on the top of the container.

2. A pin pointed weight work holder as defined in claim 1, and said pin pointed members being in the form of thumb tacks having enlarged heads and pointed shanks, said means for retaining said pin pointed members or thumb tacks comprising a thumb tack carrier plate having holes therein through which the shanks of the thumb tacks are extended, such holes adapted to be registered with the respective holes in the bottom of the container, the heads of the thumb tacks when in place on the carrier plate lying upon the upper surface thereof and screw means releasably securing the carrier plate upon the weight and the heads of the thumb tacks against the bottom surface of the weight.

No references cited. 

